Android Open Source - NPlayer Music Service

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License

The source code is released under:
Apache License
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Java Source Code

package com.qinxiandiqi.service;
//from w ww.  ja v  a 2s. co m
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.IBinder;

import com.qinxiandiqi.utils.CodeUtils;
import com.qinxiandiqi.utils.PlayingUtils;

public class MusicService extends Service {

  private MusicServiceReceiver serviceReceiver;
  private MediaPlayer mediaPlayer;
  private Intent intentToMusicActivity;

  @Override
  public IBinder onBind(Intent intent) {
    return null;
  }

  @Override
  public void onCreate() {
    super.onCreate();
    serviceReceiver = new MusicServiceReceiver();
    IntentFilter filter = new IntentFilter(CodeUtils.MUSICSERVICEACTION);
    registerReceiver(serviceReceiver, filter);
    mediaPlayer = new MediaPlayer();
    intentToMusicActivity = new Intent();
    intentToMusicActivity.setAction(CodeUtils.MUSICACTION);

    mediaPlayer.setOnCompletionListener(new OnCompletionListener() {
      @Override
      public void onCompletion(MediaPlayer mp) {
        PlayingUtils.startNextMusic(MusicService.this, mediaPlayer, intentToMusicActivity);
      }
    });

  }

  @Override
  public void onDestroy() {
    if(CodeUtils.hadLoadMusic){
      CodeUtils.musicFileList.get(CodeUtils.playingMusic).setLastTime(mediaPlayer.getCurrentPosition());
    }
    mediaPlayer.release();
    CodeUtils.hadLoadMusic = false;
    unregisterReceiver(serviceReceiver);
    super.onDestroy();
  }

  public class MusicServiceReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
      switch (intent.getExtras().getInt(CodeUtils.MEDIAOPCODE)) {
      case CodeUtils.START:
        if (CodeUtils.hadLoadMusic) {
          mediaPlayer.start();
          CodeUtils.playingMusicState = CodeUtils.PLAYING;
          intentToMusicActivity.putExtra(CodeUtils.MEDIAOPCODE,
              CodeUtils.PLAYING);
          MusicService.this.sendBroadcast(intentToMusicActivity);
          CodeUtils.musicAdapter.notifyDataSetChanged();
        } else {
          PlayingUtils.startMusicPlaying(MusicService.this,
              mediaPlayer, intentToMusicActivity);
        }
        break;
      case CodeUtils.PAUSE:
        mediaPlayer.pause();
        CodeUtils.playingMusicState = CodeUtils.PAUSE;
        intentToMusicActivity.putExtra(CodeUtils.MEDIAOPCODE, CodeUtils.PAUSE);
        MusicService.this.sendBroadcast(intentToMusicActivity);
        CodeUtils.musicAdapter.notifyDataSetChanged();
        break;
      case CodeUtils.CUTETONEXT:
        if (CodeUtils.hadLoadMusic) {
          CodeUtils.musicFileList.get(CodeUtils.forwardMusic)
              .setLastTime(mediaPlayer.getCurrentPosition());
        }
        PlayingUtils.startMusicPlaying(MusicService.this, mediaPlayer, intentToMusicActivity);
        break;
      case CodeUtils.STOP:
        PlayingUtils.stopMusic(MusicService.this, mediaPlayer, intentToMusicActivity);
        break;
      case CodeUtils.FASTFORWARD:
        if(CodeUtils.hadLoadMusic){
          int time = mediaPlayer.getCurrentPosition() + CodeUtils.STEPSIZE;
          if(time > mediaPlayer.getDuration()){
            time = mediaPlayer.getDuration();
          }
          mediaPlayer.seekTo(time);
        }
        break;
      case CodeUtils.REWIND:
        if(CodeUtils.hadLoadMusic){
          int time = mediaPlayer.getCurrentPosition() - CodeUtils.STEPSIZE;
          if(time<0){
            time = 0;
          }
          mediaPlayer.seekTo(time);
        }
        break;
      case CodeUtils.NEXTONE:
        PlayingUtils.startNextMusic(MusicService.this, mediaPlayer, intentToMusicActivity);
        break;
      case CodeUtils.FORWARDONE:
        if(CodeUtils.hadLoadMusic){
          CodeUtils.musicFileList.get(CodeUtils.playingMusic).setLastTime(mediaPlayer.getCurrentPosition());
        }
        int id = CodeUtils.forwardMusic;
        CodeUtils.forwardMusic = CodeUtils.playingMusic;
        CodeUtils.playingMusic = id;
        PlayingUtils.startMusicPlaying(MusicService.this, mediaPlayer, intentToMusicActivity);
        break;
      default:
        break;
      }
    }
  }
}
Java Source Code List
